Electric fan.



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N0.86'7,914. PATENTED OCT. 8, 1907. F. DIEHL & A. F. BECKER.

ELECTRIC PAN.

APPLIOATION FILED APB.22.1907.

2 SHEETS-SHEET 1.

WITNESSES: INVENTORS 3 fMmww/Wfw,

ATTORNEY PATENTED OUT. 8, 1907.

P. DIEHL & A. F. BECKER.

ELECTRIC FAN. \PPLIOATION FILED APR.22.1907.

2 SHEETSSHEET grim/87858.- v

' ATTORNEY UNITE-D srrA rEs PATENT OFFICE.

FREDERICK DIEHL AND ADOLPH F. BECKER, OF ELIZABETH, NEW JERSEY.

Anotrn F. BECKER, citizens oi the United States,

and residents of Elizabeth, in the county oi Union and State oi New Jersey, have invented certain new and useful Improvements in Electric Fans, of which the following is a specification. 4

This invention relates to' an improvement in that classof electric fans having a stationary base or standard upon which is pivotally mounted the motor-frame,

. and provided with means for communicating a conallel ways embracing a rotary actuating member carried by the motor-frame in aieial relation with the arnniture-shait and provided with a segmental peripheral facing adapted .to establish rolling contact relation alternately with each of said parallel ways to produce an oscillatory movement of the motor-frame.

The rotary actuating member referred to may be pcratively connected with the motor-shaft by any usual or suitable'iorn'i' 6i differential gearing adapted to convert the rapid rotary movement of the shaft into a comparatively slow movement of the actuating member; g

impractice the differential-connection is effected by two concentrically arranged overlapping internal gears, one of" which is fixed to a bearing hub of the motor-frame surrounding the armature-shaft and the, other is lixed to the actuating member, one of such gears having one ormore teeth in excess of those of the other, while an externally toothed gear intrmeshing with both internal gears is mounted upon an eccentric bushing carried .by the motor-shaft, 'the revolution of the latter upon said shaft inducing a slight relative movement of the internal'gears proportionate to the difference in the numbers of their respective teeth. V Inasmuch as these gears ind their supports are, arranged upon the same axis, the driven internal gun is carried by a sleeve fitted loosely to the said hub oftho-motor-frameand provided with a circular cavity for'thc gears which is closed by a circular cap-plate which in practice carries the sigmental contact member, in the iorm of aq'ubber tube to afford yielding and' elastic ualities in the rolling contact with the parallel ways. which produces the oscillation of the motor-future.

Specification of Letters Patent. Application filed i rusz, 1907. Serial No. 869,526.

nnnc'mro' FAN. V

Patented Oct. 8, 1907.

The invention will he understood by reference tr the drawings annexed, in which Figure 1 is a perspective view oi an electric fan constmcted in accordance with the present-improvement. Fig, 2 is an enlarged sectional view of the mechanism for producing the oscillation of the motorirame, and Fig. 3 a rear face vicw oi the same with a portion of the cap-piece removed to exposethe parts 7 within the gear cavity. Fig. 4- is a perspective view of an electric fan embodying the present invention in a modified form, and Fig. 5 a detail sectional .plan

view of a portion of the motor-frame. oscillating mechanism.

- As represented in Figs. 1, 2 and 3, the fan is constructed with the usual base or standard 1 having the.- lateral arms 2 and 3 connected at the outer ends with the parallel members or ways 4 of'a rigid yoke of substantially oval shape. One end portion only of the yoke is shown completely in full lines in Fig. 1, the opposite end portion partially hidden by thegnomrframe being represented in dotted lines; but it is to be understood that the yoke is symmetrical in form, with parallel upper and lower members united at the ends by substantially semi-circular connecting members. The motor-frame 5 is shown pivotally mounted at the inner ends of the arms .2 and 3 of the standard 1 by means of the conical beating screws 6.

The motor is provided with the usal rotary armature 7 having its shaft 8 journaled in suitble hearings in the arrnatureframe, one of which is shown as a bushing 9 disposed within a lateral bearing hub 10 of the motorframe in which it is securely locked from endwise thereon at the opposite end by means of a sct screw 13 an eccentric 14 encircledby a wcaringaing 15 secured within the hub of the gear-wheel 25 by mcans'oi the pins 16. v

Mounted loosely upon the bearinghub 10 is a. sleeve 17 formed with a flanged portion 18 having in its rearward face a cavity embracingtbe eccentric 14. Within the bottom of this cavity is fitted the annular plate l9 having its apertured inner portion titted to the annularly cut-away end portion of the bearing-boss 10 and "secured to the same by means of fastening-screws 20.

To theoutcr periphery of the plate 19 is titted thecorrc spondinglyrecesscd adjacent face oi a ring 21 locked from turning in respect oftlre same by means of one or moretransverse-pins 22. This ring 21 is provided with an annular series of'gear-teeth to form an internal gear- .wheel. The annular plate 19 thus constitutes a rigid connection between the bearing hub 10 and the internal gear-wheel 21 which latter is thus held in fixed relation,

, I Overlapping the internally toothed ring 21 is a second I tion 18 of the sleeve 17. I I T Tliia'teeth of both internal gears 21 and 23 are engaged internally toothed ring or internal gear 23 having teeth ofsubstantially the same pitch but differing'slightly in number from those of the internal gear 21, the gear 23 having a flange extending outwardly beyond the pe riphery of the gear 21 and being secured by fasteningscrews 24 to a seat provided therefor in the flanged porupon'onej side of the armature-shaft by a. commonintermeshing externally-toothed planet-'gear-wheel 25 with the wearing-ring -mounted upon the eccentric :14 the face of the gear having a width equivalent to the '7 aggregate of the widths of the other two gears. While I the gears. of this differential train are preferably of the I also carries an oil-cup 28 screwed into a suitably thread e'dlateral aperture therein, a 'doil is communicated from'such oil-cup to the surface of the shaft 8 through forms and arrangemnt'representcd herein, it is evident that suchma'tt'ers are not essentiTrll'td the differential driving connection between the aim-ature-shaft and the actuating member 17. I

- The gear-cavity. within the loose sleeve 17 is closed and made dustand oil-tight by a cap-plate 26 fitted with broken joints to a. suitable scat upon the rear face ofthe flanged portion 18 and secured thereto by means of fastening-screws 27. The gear-cavity thus affords a lubricant-holding chamber adapted to confine a q'uantity of a-heavy oil or vaseline to insure the proper lubrication of thedifferential gearing within the same for aronslderablelength of timewithout the attention of attendanhflc The reduced portion of the sleeve 17 the alined oil holes 29 and 30 in the bearing hub 10 and the 9, respectively. Upon 'one side, the periphery of the cap-plate 26. is

grooved receive the adjacent side of a segmental facin'g,,represented ass-piece of rubber tubing 31 having its endsL flaltened and secured in V-shaped notches 32 in the edgei'of'the plate 26 by means of screws 33. The

A gairis o f themaih-shaft and the, gears 21 and23 being equidistant from the wearing-faces of the ways 4, which are curyed concentrically with the axis of oscillation of the motor-frame 5. and are spaced'apart slightly in ex cess of the-diameter of the cap-piece 26, the facing 31 in the rotation of the sleevell-and cap piece 26 serves to establish rolling contact with first oneand then' the other of the'ways 4. As the ways are fixed in position, it results that the motor-frame is moved in one direction while the facing 31'rolls in contact with one of the ways 4 and in theopposite direction during the engagement 1 of the facing with the other of the ways. As represented in Fig. 3, partially-in dotted lines, the facing 31 eecupies a segment of the rim of the cap-piece 26 slightly more than a semi-circumference, so that whilecontact is still maintained'with one of the ways at the end of a movement-of the motor-frame in one direction, contact is established with the other way preparatory to the reverse rnover nent of the motor-frame. In this action a certain slippage takes place while one end of the facing 31. is be c o'riiing' disengaged from its respective way-4, but this is provided for in the embodiment'represcnted in the drawings by the yieldingand elastic character of the facing, although it is evident that other provision might be made for compensation-for such slippage, or the length of the segmental facing 31 might be redu e to avoid the action referred to.

While other yielding material would perform the required function in a manner more or less satisfactory, the rubber tubing is preferable, not only because of its yielding quality, butby reason of its cushioning action and its elasticity which enables it. to-compensatefor I wear by reason of long service so as to insure not only durability "but uniformity of operation. 7 5

The operation of the device as thus described is as follow s: The throwing of the usual switehin thebase of I the standard 1 starts the motor, which rotates the propeller 12 in a wellknown manner regardlessof the motor-frame oscillating mechanism above described. The rotation of the shaft 8 and its eccentric 14 causes the successive engagement of the peripheral teeth of the gear-wheel 25 circumferentially with those of the internal gears 21 and 23, but as the teeth of the latter differ slightly in number, the teeth of the gear 25 act as wedges to bring the portions of both internal gears progressively into register-at the successive common points of tangency, andas the internal gear 25 is connected with the hhrih 'io in which the shaft 8 rotates; the other internal gear 23 is given a differential motion in one or the other directionfdependent upon whether the number of teeth in the loose gear-wheel is greater or loss than those ofthe fixed gear-wheel. By this means, the loose gear-wheel 23 communicates a comparatively slow rotating movement to the cap-plate 26 through the connected member-18, and the segmental facing 31 is thus enabled to roll alternately in contagt with the opposite parallel ways 4 of the yoke carried by the standard 1.

As the yoke is maintained stationary, the member 26 is caused by the rolling connection with the.latter ostablished by means of the facing 31 to move to-and-fro so as to produce the described oscillation of the motor-frame by which it is carried upon its bearing centers 6.

In the modification represented in Figs. 4 and 5, the standard 1 is provided with a U-shaped supporting 1C5 yoke 34 carrying the pivotal center-screws 6 upon which is journalcd the motor-frame 5 provided with the armature-shaft 8 carrying at the forward end the fan-wheel 12. At the rearward end the motor-frame carries a r rary actuating member 35 which is or may be mounted thereon similarly to the corresponding member in the formof the improvement previously described and inay'be similarly actuated by differential gearing driven by thev armature-shaft. In this form of the improvement, the member 35 is shown pro-- vided with a peripheral cam-groove 36 whichis entered by a roller-stud 37 upon the shorter arm 38 of a bellcrank lever 41 pivotally mounted at its angular portion by means of a screw-stud 39 upon a bracket-member 4 0 secured to the rear of the motor-frame, and having its longer arm'connccted by means of a screw-stud'42 I with one end of a link 43 having its opposite end cohnected by means of a pivotal screw 44 to the base of the supporting yoke 34 near'the motor-frame bearing. As I the actuating-member 35 rotates, it causes the rocking of the bell-crank lever 38 41, which through its connection witht he-stationary member 34 causes the motor-frame 5 w oscillate upon its center-shrews. While this form of this improvement has the advantage of a I positive connection between the actuating member carmore ried by the motor-frameand the stationary motor frame support, to insure a uniform timing of the parts, the previously described form of the improvement is consideredpreferable, that it avoids theusc oi a can and contains less parts and is less liable to get out of order by the loosening of screws or otherwise, i

In the form of the improvement represented in Figs. 1, 2 and 3, the facing 31 is very easily renewed, and the removal of the cap-piece 26 not only serves to free the ni'dforffi'anie from its stationary supporting member to enable the same to swing freely upon its bearings,

' able modification in other ways, without departure from the scope of the same.

Having thus set forth the invention, what I claim herein is:--

1. in an electric fan, in combination, a motor-frame, a

standard upon which said motor-frame is pivotally supported; a lllOl'ul comprising an armatureshai't journaled insaid motor-frame. a rotary actuating member-carried by said motor-frame and mounted concentrically with said armature-shaft, dili'crentia gearing intermediate the arniatureshatt and said actuating member, and an operalive connection lxrtwccu the standard and said actuating nicrab'erwhereby as the latter rotates it commnnimitos i0 the motor-frame a to-and-l'ro standard. A

I 2. in an electric fan,-,in combination} a motor-frame. a

movement relative to said standard upon which said motor-tram .is pivotally supported. a motor comprising an armature-shaft journaled in said motor-Ironic, a rotary :u-tuati rig nicnibcr carried by said motor-frame and mounted concentrically with said arnmturc-slnrtt, dllTerential' gearing intermediate the armature-shaft and said actuating member provided with a closod dust-proof casing, and an operative conneciion bo tween the standardmnd' said actuating member whereby as th latter rotates it communicates to the motor-frame a io-and-fro movement relative to said standard.

in an electric fan, in combination, a motor-frame,- a

: standard upon which said motor-frame is pivoially supllnl'flll. a motor comprising an armature-shaft journalcd -in said motor-franw, concentrically arranged gear-wheels havinc different numbcrs of peripheral teeth, both being carried by said motor-frame, the one being adapted to roriod by said motor-frame whereby as the latter rotates it ported, a motor comprising an armature-shaft journaled in said motor-frame, a rotary actuating member carried by said motor-frame concentrically with said armature shaft. concentrically arranged gears having difllerent numhers or pcripheralteetb, ther'one carried. by and stationary in respect of the motor-frame and the other carried by and movable with said actuating member, a. planct-whecl mounted and free to rotate upon said shaft and adapted to mesh with said concentric gear-wheels, and an operative connection between said standard and the actuating member, whereby as the latter rotates it communicates to the 'inotor-frame a to-and-tro movement relative to said standard. I

7|. in an electric fan, in combination, a motor-frame, a

standardupon which said motor-frame is pivotally supported, a motor comprising an armature-shaft journaled in said motor-frame, a otary actuating member carried vidcd u'iih parallel \va by said motor-frame concentrically with said armatureshaft, concentrically arranged internal gear-wheels having different numbers of peripheral teeth, the one carried by and stationary in respect of the motor-frame and the other carried by and movable with said actuating member, an eccentric fixed upon said armature-shaft, a planetwheel loosely mounted upon said eccentric and adapted to mesh with both oi. said internal'gear-wbeels, and an operative connection between said standard and the actuating member, whereby as the'latter rotates it communicates to the motor-frame a to-and-tr'o movement relative-to said standard.

6. Inan electric fan, in combination, a motor-frame having a bearing-boss, a standard upon which said motorirame ls plvotally supported, a motor comprising an armature-shaft jonrnaled' within said bearing-boss of. the

motor-frame, a rotary sleeve loosely mounted 'up'on -the .hcariug'boss of said motor-frame and provided with a other being carried by andmovable with said rotary sleeve, an eccentric fixed upon said armature-shaft, a

planet-wheel loosely mounted upon said eccentrlclmd adapted to mesh with both of said internal gear-wheels, and an operative connection intermediate said standard and said sleeve whereby as the latter rotates it communicatcs to the motor-frame a to-and-iro movement relative to said standard. i

7. in an electri fan,.in combination, a motor-frame having a bearing-boss, a standard upon which said motor- .lramc is pivotally supported, a motor comprising an armature-shaft journalcd .within said bcaring-boss of the motor-frame, a rotary sleeve loosely mounted upon the bearing-boss of said motor-frame and provided' with a gum-cavity, internal gears havim, different nnmbersot peripheral tcclh disposed within said. gear-cavity concentrically with the armature-shaft, the one being fixed to and stationary in respect of'said bearing huh and the other being carried by and movable with said rotary sleeve, an eccentric iiXt'(i ll1l0ll said armatureshai't, a,

plancl-whccl loosely mounted upon said eccentric and adapted to mesh with-both of said internal gear-wheels, a removable cap applied to and adapted to close the cavity of said sleeve, and an operative connection intermediate said standard and said sleeve whereby as the latter rotaics itfconnmmicates ,to the motor-frame a to-and-iro movement relative to said standard.

N. in an electric fan, in combination, .a standard pro;

shai't join mod within said bearing-boss of the motori'ralnc, arotary actuating member carried by said motorframe and mo. ntcd concentrically with said armatureshait and having a rolling contact with said ways of the standard, and. diilcrontial gearing intermediate the armalurc-shaf t and said actuating member. V

.l. in an electric fan, in combination, a standard provided with parallel ways. a motor-frame pivotally mounted tin-coon and having a bearing boss extending in a direction intermediate said ways, a motor comprising an armatureshait journalcd within said bearing-boss oi the motor- Iramc, a rotary actuating member carried by said motortramc and mounted concentrically with sa'rd armatureshaft, a removable peripheral facing extending partly around said rotary member and adapted to establish roll-' lug contact relation alternately between the same and the parallel ways of said standard, and differential gearing -inte'rmcdiate the armature-shaft and .said actuating a motor-frame pivotally mounted vided with parallel wa vs.-a motor-frame pivotaliy mounted 4 thereon and having a bearing-boss extending in a direction intermediate said ways. a motor comprising an armatuie ,shaft jcurnaied within sztid bearingJl ossAof the t notor-' frame; a rotary actuating member earri diiiy said motortrame and mounted concentrically with said armatureshait. a yielding and elastlt' facing extending partly around the 'periphery of said actuating member and adapted to establish rolling contact relation alternately hetueen the same and the parallel ways of said standard. and differential 'geii-lnfl" intermediate the armature-shaft and said actuating meuiber:

12. in an electric fan, in combination. a standard'provided with parallel ways. a motor-frame plvotally mounted thereon and having a bearing-boss extcndingnin a direction intermediate said ways, a. motor comprising an armatureshatt-dournaled within said hearing-boss of the motor frame. a rotary actuating member carricd by said motoriramc and mounted-concentrically with said armatureshai't. a] yielding and elastic facing formed of rubber tubing extending partly around the periphery of said actuating member and adapted to-establish rolling contact relation alternately between the same and the parallel ,ways of said standard, and differential gearing intermediate the armature-shaft and said actuating member.

3. in an electric fan. incombinatiou; 'a motor-frame having a bearing-boss, a standard upon which said motorframe is plvotaliy supported, a motor comprising-an armailll'l Sllilft journaled within said bearing-boss of the motor- 'frame. 'a-rotary sleeve loosely mounted upon the hearingboss of said motor-frame and provided with a gear-cavity, internal gears having dificrent numbers of peripheral teeth disposed within said gear-cavity concentrically with the armature-shaft. ,the 'one being fixed toand stationary in respect of said bearing hub and the other being carried r ed to close the cavity of said slecyefland a segmental peripheral, facing of yielding mat nal applied to said cap and adapted to establish rollingjcontaci: relation alter-- teetlr disposed within said gear-cavity concentrically with the armature-shaft, the one being iixcd' to and stationary in respect of said bearing-boss and the other being carried by and movable with said rotary sleeve, an eccentric fixed upon said armature-shaft, a planet-wheel loosely mount d upon said eccentric and adapted to mesh with both of said internal gear-wheels, a removable cap applied to and adapted to close the ca rity of said sleeve, and a segmental peripheral facing of yielding material and extending more than a semi-eircumt'erence around said cap and adapted: to establish rolling contact relation alternately between the same and the parallel ways of said standard.

15. in an'electrie fan, in combination, a motor-frame. a standard upon which said motor-frame is pivotally supported and provided with a rigid yoke affording spaced parallel ways. and with an arm extending laterally from one of said ways to carry one of the pivotal supports of said motor'frame. a motor comprising an armature-shaft journaled in-said motor-frame, a rotary actuating member carried by said motor-frame and mounted concentrically with said at-maturesliaft, a segmental facing applied to the periphery of said actuating member and adapted to establish rolling contact relation between the latter and the said ways. and an operative connection between the armature-shaft and said actuating member.

in testimony whereof, we have signed our names to this speeificatiom in the presence of twosubscribing witnesses.

FREDERICK munnf AUOLIH F., BECKER.

Witnesses 2 lit-:xnr .l. Minn-1n, ilrzstn' KOltNl-IMANN. 

